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<title>class OpenSSL::X509::Attribute - openssl: Ruby Standard Library Documentation</title>


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    <main role="main" aria-labelledby="class-OpenSSL::X509::Attribute">
    <h1 id="class-OpenSSL::X509::Attribute" class="class">
      class OpenSSL::X509::Attribute
    </h1>

    <section class="description">
    
    </section>

      <section id="5Buntitled-5D" class="documentation-section">





                <section id="public-class-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Public Class Methods</h3>
                </header>

                  <div id="method-c-new" class="method-detail ">
                      <div class="method-heading">
                        <span class="method-callseq">
                          new(oid [, value]) &rarr; attr
                              </span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="new-source">
            <pre>static VALUE
ossl_x509attr_initialize(int argc, VALUE *argv, VALUE self)
{
    VALUE oid, value;
    X509_ATTRIBUTE *attr, *x;
    const unsigned char *p;

    GetX509Attr(self, attr);
    if(rb_scan_args(argc, argv, &quot;11&quot;, &amp;oid, &amp;value) == 1){
        oid = ossl_to_der_if_possible(oid);
        StringValue(oid);
        p = (unsigned char *)RSTRING_PTR(oid);
        x = d2i_X509_ATTRIBUTE(&amp;attr, &amp;p, RSTRING_LEN(oid));
        DATA_PTR(self) = attr;
        if(!x){
            ossl_raise(eX509AttrError, NULL);
        }
        return self;
    }
    rb_funcall(self, rb_intern(&quot;oid=&quot;), 1, oid);
    rb_funcall(self, rb_intern(&quot;value=&quot;), 1, value);

    return self;
}</pre>
                              </div>
                            </div>


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                          </section>

                <section id="public-instance-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Public Instance Methods</h3>
                </header>

                  <div id="method-i-3D-3D" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">==</span><span
                                class="method-args">(other)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="3D-3D-source">
            <pre><span class="ruby-comment"># File openssl/lib/openssl/x509.rb, line 330</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">==</span>(<span class="ruby-identifier">other</span>)
  <span class="ruby-keyword">return</span> <span class="ruby-keyword">false</span> <span class="ruby-keyword">unless</span> <span class="ruby-constant">Attribute</span> <span class="ruby-operator">===</span> <span class="ruby-identifier">other</span>
  <span class="ruby-identifier">to_der</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">other</span>.<span class="ruby-identifier">to_der</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-initialize_copy" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">initialize_copy</span><span
                                class="method-args">(p1)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="initialize_copy-source">
            <pre>static VALUE
ossl_x509attr_initialize_copy(VALUE self, VALUE other)
{
    X509_ATTRIBUTE *attr, *attr_other, *attr_new;

    rb_check_frozen(self);
    GetX509Attr(self, attr);
    GetX509Attr(other, attr_other);

    attr_new = X509_ATTRIBUTE_dup(attr_other);
    if (!attr_new)
        ossl_raise(eX509AttrError, &quot;X509_ATTRIBUTE_dup&quot;);

    SetX509Attr(self, attr_new);
    X509_ATTRIBUTE_free(attr);

    return self;
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-oid" class="method-detail ">
                      <div class="method-heading">
                        <span class="method-callseq">
                          oid &rarr; string
                              </span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="oid-source">
            <pre>static VALUE
ossl_x509attr_get_oid(VALUE self)
{
    X509_ATTRIBUTE *attr;
    ASN1_OBJECT *oid;
    BIO *out;
    VALUE ret;
    int nid;

    GetX509Attr(self, attr);
    oid = X509_ATTRIBUTE_get0_object(attr);
    if ((nid = OBJ_obj2nid(oid)) != NID_undef)
        ret = rb_str_new2(OBJ_nid2sn(nid));
    else{
        if (!(out = BIO_new(BIO_s_mem())))
            ossl_raise(eX509AttrError, NULL);
        i2a_ASN1_OBJECT(out, oid);
        ret = ossl_membio2str(out);
    }

    return ret;
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-oid-3D" class="method-detail ">
                      <div class="method-heading">
                        <span class="method-callseq">
                          oid = string &rarr; string
                              </span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="oid-3D-source">
            <pre>static VALUE
ossl_x509attr_set_oid(VALUE self, VALUE oid)
{
    X509_ATTRIBUTE *attr;
    ASN1_OBJECT *obj;
    char *s;

    GetX509Attr(self, attr);
    s = StringValueCStr(oid);
    obj = OBJ_txt2obj(s, 0);
    if(!obj) ossl_raise(eX509AttrError, NULL);
    if (!X509_ATTRIBUTE_set1_object(attr, obj)) {
        ASN1_OBJECT_free(obj);
        ossl_raise(eX509AttrError, &quot;X509_ATTRIBUTE_set1_object&quot;);
    }
    ASN1_OBJECT_free(obj);

    return oid;
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-to_der" class="method-detail ">
                      <div class="method-heading">
                        <span class="method-callseq">
                          to_der &rarr; string
                              </span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="to_der-source">
            <pre>static VALUE
ossl_x509attr_to_der(VALUE self)
{
    X509_ATTRIBUTE *attr;
    VALUE str;
    int len;
    unsigned char *p;

    GetX509Attr(self, attr);
    if((len = i2d_X509_ATTRIBUTE(attr, NULL)) &lt;= 0)
        ossl_raise(eX509AttrError, NULL);
    str = rb_str_new(0, len);
    p = (unsigned char *)RSTRING_PTR(str);
    if(i2d_X509_ATTRIBUTE(attr, &amp;p) &lt;= 0)
        ossl_raise(eX509AttrError, NULL);
    ossl_str_adjust(str, p);

    return str;
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-value" class="method-detail ">
                      <div class="method-heading">
                        <span class="method-callseq">
                          value &rarr; asn1
                              </span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="value-source">
            <pre>static VALUE
ossl_x509attr_get_value(VALUE self)
{
    X509_ATTRIBUTE *attr;
    STACK_OF(ASN1_TYPE) *sk;
    VALUE str;
    int i, count, len;
    unsigned char *p;

    GetX509Attr(self, attr);
    /* there is no X509_ATTRIBUTE_get0_set() :( */
    if (!(sk = sk_ASN1_TYPE_new_null()))
        ossl_raise(eX509AttrError, &quot;sk_new&quot;);

    count = X509_ATTRIBUTE_count(attr);
    for (i = 0; i &lt; count; i++)
        sk_ASN1_TYPE_push(sk, X509_ATTRIBUTE_get0_type(attr, i));

    if ((len = i2d_ASN1_SET_ANY(sk, NULL)) &lt;= 0) {
        sk_ASN1_TYPE_free(sk);
        ossl_raise(eX509AttrError, NULL);
    }
    str = rb_str_new(0, len);
    p = (unsigned char *)RSTRING_PTR(str);
    if (i2d_ASN1_SET_ANY(sk, &amp;p) &lt;= 0) {
        sk_ASN1_TYPE_free(sk);
        ossl_raise(eX509AttrError, NULL);
    }
    ossl_str_adjust(str, p);
    sk_ASN1_TYPE_free(sk);

    return rb_funcall(mASN1, rb_intern(&quot;decode&quot;), 1, str);
}</pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-value-3D" class="method-detail ">
                      <div class="method-heading">
                        <span class="method-callseq">
                          value = asn1 &rarr; asn1
                              </span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="value-3D-source">
            <pre>static VALUE
ossl_x509attr_set_value(VALUE self, VALUE value)
{
    X509_ATTRIBUTE *attr;
    VALUE asn1_value;
    int i, asn1_tag;

    OSSL_Check_Kind(value, cASN1Data);
    asn1_tag = NUM2INT(rb_attr_get(value, rb_intern(&quot;@tag&quot;)));
    asn1_value = rb_attr_get(value, rb_intern(&quot;@value&quot;));
    if (asn1_tag != V_ASN1_SET)
        ossl_raise(eASN1Error, &quot;argument must be ASN1::Set&quot;);
    if (!RB_TYPE_P(asn1_value, T_ARRAY))
        ossl_raise(eASN1Error, &quot;ASN1::Set has non-array value&quot;);

    GetX509Attr(self, attr);
    if (X509_ATTRIBUTE_count(attr)) { /* populated, reset first */
        ASN1_OBJECT *obj = X509_ATTRIBUTE_get0_object(attr);
        X509_ATTRIBUTE *new_attr = X509_ATTRIBUTE_create_by_OBJ(NULL, obj, 0, NULL, -1);
        if (!new_attr)
            ossl_raise(eX509AttrError, NULL);
        SetX509Attr(self, new_attr);
        X509_ATTRIBUTE_free(attr);
        attr = new_attr;
    }

    for (i = 0; i &lt; RARRAY_LEN(asn1_value); i++) {
        ASN1_TYPE *a1type = ossl_asn1_get_asn1type(RARRAY_AREF(asn1_value, i));
        if (!X509_ATTRIBUTE_set1_data(attr, ASN1_TYPE_get(a1type),
                                      a1type-&gt;value.ptr, -1)) {
            ASN1_TYPE_free(a1type);
            ossl_raise(eX509AttrError, NULL);
        }
        ASN1_TYPE_free(a1type);
    }

    return value;
}</pre>
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